Which city is known as "City of Sails"？A．Auckland.B．Edinburgh.C．Melbourne.D．Perth.

After 1900s, which city was assumed as leadership in the development of the skyscraper

___ the third largest city in Canada, is well known as Ice-Free Harbor.A．MontrealB．QuebecC

______ is also known as "City of Saints".A．VancouverB．TorontoC．OttawaD．Montreal

______ , known as "the City of Angels", is the second largest city in the United States.A．

______ , located in Michigan, is known as "Motor City".A．ChicagoB．DetroitC．HoustonD．Atlant

Which city is considered as "the cradle of American Liberty"？A．Philadelphia.B．Boston.C．Los